Finding the Third Proportional to 67.78 and 100.17

Step by Step Solution

1. Step 1: Write the proportion equation
   67.78 : 100.17 = 100.17 : x
2. Step 2: Convert to fraction form
   67.78/100.17 = 100.17/x
3. Step 3: Cross multiply
   67.78x = 100.17 × 100.17
4. Step 4: Simplify right side
   67.78x = 10,034.40
5. Step 5: Solve for x
   x = 10,034.40/67.78
6. Step 6: Final answer
   x = 148.04